Ash removing outlet and door for heaters



Dec. 9, 1941. E. s. WADDELL ASH REMOVING OUTLET AND DOOR FOR HEATERS 2 SheerQs-Sheet 1 Filed June 26, 1940 I 3nventr NM m1 attorney Dec. 9, 1941. r E. s. WADDELL 2,265,587

ASH REMOVING OUTLET AND DOOR FOR HEATERS Filed June 26, 1940 2 Sheets-Sheet 2 Smnentor 30 1: J: Wa QZeZZ Patented Dec. 9, 1941 ASH REMOVING OUTLET AND DOOR FOR HEATER/S Elliott S. Waddell, Columbus, Ga., assignor to- Columbus Iron Works 00., Columbus, 6a., a corporation of Georgia Application June 26, 1940, Serial No. 342,552

6 Claims.

The present invention relates to ash removin outlets and doors for heaters, and more particularly for use in wood burning heaters.

I As heretofore practiced in wood burning heaters, the removal of ashes has been effected through the top of the heater which is inconvenient, laborious and inefficient.

An important object of the invention is to provide an ash removal outlet and door which is not subject to the disadvantages above mentioned.

Another object of the invention is to provide an ash outlet and door which in closed position will be air tight.

A further object of the invention is to provide an ash outlet and door which is simple and inexpensive and which is easily installed.

A still further object of the invention is to provide an ash outlet and door which may be applied to existing heaters.

Other objects and advantages will be apparent during the course of the description that follows.

In the drawings, like parts are denoted by similar reference characters throughout the several views.

Figure 1 is a side elevational view of the invention applied to a wood burning stove.

Figure 2 is a front elevational view of Figure 1.

Figure 3 is a top plan view of the outlet and door therefor.

Figure 4 is a front elevational view with the ash door in closed position.

Figure 5 is a front elevational view with the ash door in open position.

Figure 6 is a side elevational view of the parts shown in Figure 4.-

Figure '7 is a rear elevational view of the parts shown in Figure 4, and

Figure 8 is a vertical sectional viewtaken on the line 88 of Figure 4.

Referring more particularly to the drawings, the numeral I designates a wood burning heater provided at the top with an opening having a cover II for the insertionof fuel and with an opening l2 in the top for the attachment of a stove pipe [3.

The heater is designed to contain a bed of sand or ashes on which the fire is built and on which it burns, and preferably in a plane with or slightly above the surface of the bed of sand or ashes is the bottom of the draft opening. Secured to the heater within or around the draft opening is the draft elbow I4. This elbow is rigidly secured to the stove by screws or rivets and is provided on its upper face with an opening l surrounded by a collar or flange l6 removably secured to the elbow M by fastenings H. A draft flue or pipe 18 is mounted on the collar l6 and may be secured thereto by rivets or the like if desired.

The draft flue 18 may be of any desired shape and extends approximately from the plane of the top of the stove to the top of elbow l4. Conventional air inlets l9 and control means 20 therefor are provided at the top of the draft tube l3 while a damper having control means 2| is provided within the draft tube.

As shown indetail by Figures 3 to 8, the elbow IQ of draft tube 53 is utilized to provide the removal outlet by providing on its outer inclined face an opening 22. This opening 22 is in substantial alinement with the draft opening of the heater which in turn is in a plane with the fuel consumed in heater Ill.

The opening 22 also forms the frame for a door 23 which has its inner portion recessed to ac-,

commodate a plate 24 provided with a continuous flange 25. This flange is snugly received within the opening 22 to provide an air-tight closure for same. In order that the plate 24 may be readily replaced it is removably attached to the door by bolts 25 and'nuts 21. v

On its outer face the door 23 is provided with an integral central radial rib 28 having a cam face 29. The lower end of the rib 28 projects beyond the door to form an arm 30 which is received between spaced ears 3| of abracket 32. Suitable openings are provided in arm 30 and ears 3| to enable a pin 33 to be received therein to form a hinged or swinging connection for the door.

' The bracket 32 is detachably secured to the lower portion of the elbow M by a bolt 34 and nut 35 whereby it may be readily attached or detached therefrom if desired. The distance between ears 3| is greater than the width of arm 30 thus giving the door a lateral play to aid its alinement with the opening 22 when assuming a closed position.

To retain the door in closed position and to further insure an air-tight closure for opening 22 a yoke 36 is pivotally connected to elbow l4 by a rod 31. The yoke straddles the elbow with its closed end 38 having a limited swinging movement over the outer face of the elbow I4 and door 23.

The uppermost central portion of the elbow M is also provided with an integral radial rib 39 having a cam face 40 in alinement with the radial rib 28 and cam face 29 on the door 23. The rib 33 is within the swinging range of the yoke 36 and closed end 38 thereof for a purpose now described.

is resisted by the cam face with the result that the yoke will be frictionally held in binding en- 'gagement with the cam face of rib 39.

When it is desired to close the opening 22, the

doorris alined with the opening and the yoke given a slight tap to release it from engagement with cam face lil.v The yoke swings downwardly until it'engages the rib 28 of door 23. Downward movement of the yoke is resisted by the cam face 29 so that a slight downward pressure ofthe yoke will force and retain the door into intimate engagement with its frame to provide an air-tight closure for the outlet 22. This is very important in that when the door is closed the outlet must be air-tight so as to continue to force air into the heater through the draft tube It and elbow l4.

The present outlet and door being part of the elbow I4 may be applied to existing heaters without. any modification of the heater as is obvious.

All of the parts making up the elbow outlet and closure are made of suitable heat resisting material in any suitable mannersuch as casting. Preferably, the door 23, rib 28 and arm 30 are cast integrally to eliminate expense and provide a strong construction. In the same manner el bow l4 and. rib 39 are similarly formed.

It is obvious that various changes and modifications may lbemade in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed is:

l. An elbow for the draft opening of a heater, 1

said elbow being provided with an outlet opening in alinement with said draft opening, a hinged door on said elbow for closing said outlet opening, cam members on the outer face of said door, second cam members on the upper outer face of said elbow, and a yoke capable of up and down movement carried by said elbow, said yoke in its down position engaging said first mentioned cam members to frictionally retain said door closed over said outlet opening, said second mentioned cam means frictionally retaining said yoke in its up position when said door is open,

2. In a heater having a draft opening, an air directing member over said opening and secured tothe heater, said member beingprovided with the interior of the heater through the draft opening, said elbow having an outlet opening in alinement with the draft opening, a hinged door normally biased to open position for closing said outlet opening, cam means on said door, cam means on said elbow, and a member mounted for swinging movement on said member and adapted to selectively engage the first mentioned cam means when the door is in closed position for frictionally retaining the door in closed posi-- tion, and the second mentioned cam means when the door is in the normally biased open position.

4; An elbow for the draft opening of a heater,

said elbow being provided with anoutlet opening in alinement with said draft opening, a hinged door on said elbow for closing said out let opening, means extending from the outer face of said door, means extending from the upper outer face of said'elbow, and a member mounted for movement over said means, said member in one position engaging said first mentioned means for retaining said door closed over saidoutlet opening and in another position engaging the second mentioned means to be retained out of the path of said door.

5. An elbow for the draft opening of a heater, said elbow having an outlet opening in its outer face and in alinement with the draft opening,

a door carried by said elbow and adapted to cover and uncover said" outlet opening, a cam member on the outer face of said door,a second cam member carried by said elbow and in substantial alinement with said first mentioned cam member, and a swinging member frictionally engageable with the first mentioned cam memher when the door covers said outlet opening to retain same closed air-tight, said member frictionally engaging said second cam means when the door is opened.

6. An elbow for the draft opening of a heater, said elbow having an outlet opening in alinement with the draft opening,a door carried by said elbow and adapted to cover and uncover said outlet opening, cam means on said door, cam means on said elbow, and a member secured to said elbow for up and down movement over said door and elbow, said member in its down posi-' tion adapted to engagethe first mentioned cam means toretain the door. closed over said outlet pening and engaging the econd, mentio d cam means in its up position, to be retained thereby when the door is opened.

. ELLIOTT S. W ADDELL. 

